Siemens Simotics S 1FK7060-5AF71-1UH3

Name: Siemens Simotics S 1FK7060-5AF71-1UH3
Brand: Siemens
SKU: 1FK7060-5AF71-1UH3
Availability: OutOfStock

€ 1.900,00

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SKU: 1FK7060-5AF71-1UH3 Category: Servo Motor Brand: Siemens

Description
Additional information

The Siemens 1FK7060-5AF71-1UH3 is a compact synchronous servo motor belonging to the SIMOTICS S 1FK7 series, designed for use in dynamic motion control applications. This part number designates a motor with a 6 Nm rated torque class, natural convection cooling, and an incremental encoder feedback system, intended for integration with Siemens SINAMICS drive systems. The 1FK7 series is part of Siemens' broader SIMOTICS portfolio and is engineered to deliver high torque density in a compact frame size.

The 1FK7060-5AF71-1UH3 features a permanent magnet synchronous design that enables high dynamic response and precise positioning performance. It is equipped with an incremental encoder (TTL/HTL compatible) for accurate speed and position feedback, and the motor winding is configured for a specific voltage class suited to SINAMICS S120 and S110 drive pairings. The motor incorporates an integrated holding brake option and thermal protection via a KTY84 or PTC thermistor embedded in the stator winding. The shaft and flange conform to standard IEC dimensions, facilitating straightforward mechanical integration.

The 1FK7060-5AF71-1UH3 is widely deployed in machine tool applications, packaging machinery, printing presses, and general factory automation where precise speed regulation and positioning are required. Its compact frame size and high power-to-weight ratio make it suitable for multi-axis gantry systems, conveyor drives, and robotic end-of-arm tooling. The motor's compatibility with the SINAMICS drive ecosystem allows seamless integration into Siemens TIA Portal-based automation architectures.

Technical Specifications

Series / Product Family	SIMOTICS S 1FK7
Rated Torque	6 Nm
Rated Speed	2000 rpm
Stall Torque	6 Nm
Rated Power	1.26 kW
Motor Type	Permanent Magnet Synchronous Servo Motor
Cooling Method	Natural convection (self-cooled)
Feedback Interface	Incremental encoder (TTL)
Holding Brake	Included
Thermal Protection	KTY84 / PTC thermistor
Protection Rating	IP65 (shaft end IP64)
Insulation Class	Class F (155 degrees C)
Operating Temperature	0 to +40 degrees C
Storage Temperature	-20 to +70 degrees C
Relative Humidity	5 to 95 % (non-condensing)
Mounting	Flange mount (IEC standard)
Certifications	CE, UL
Compatible Drive Systems	SINAMICS S120, SINAMICS S110

Common Fault Codes

F07900: Motor overtemperature: The motor temperature has exceeded the permissible limit as detected by the KTY or PTC sensor.
Check motor load cycle and ambient temperature. Verify thermistor wiring continuity. Allow motor to cool before restarting. Reduce duty cycle or improve ventilation if overloading is confirmed.
F07901: Motor temperature sensor fault: The KTY84 or PTC thermistor signal is outside the valid range, indicating a wire break or short circuit.
Inspect the thermistor wiring between the motor and the drive encoder connector. Measure thermistor resistance at the motor terminal. Replace motor if internal sensor is damaged.
F03505: Encoder fault: The incremental encoder signal is missing or implausible. This may indicate a broken encoder cable, connector fault, or encoder hardware failure.
Check encoder cable for damage, correct seating of connectors, and shield continuity. Verify supply voltage at the encoder connector. Replace encoder cable or motor encoder if fault persists.
F07011: Drive: Motor stall detected. The motor has not reached the demanded speed within the expected time, indicating a mechanical blockage or excessive load.
Check mechanical load for obstruction or excessive friction. Verify that torque limits in the drive parameters are set correctly. Inspect coupling and gearbox if fitted.
F07086: Drive: Speed controller output at limit. The speed controller is saturated, indicating the motor cannot achieve the demanded speed under the current load conditions.
Reduce load or speed demand. Check motor sizing against application requirements. Verify DC link voltage is within specification. Review current limit parameters in the SINAMICS drive.
A07012: Alarm: Motor overtemperature pre-warning. The motor temperature is approaching the shutdown threshold.
Reduce motor load or duty cycle. Improve ambient cooling conditions. Investigate whether the motor is correctly sized for the application before the fault escalates to F07900.
F30001: Power unit: Overcurrent detected in the output stage of the connected SINAMICS drive. May be caused by a motor winding short circuit or insulation fault.
Disconnect the motor and measure winding resistance and insulation resistance to PE. If winding insulation is degraded, the motor requires rewinding or replacement. Check motor cable for damage.
F07080: Holding brake fault: The brake monitoring function has detected that the holding brake is not releasing or engaging correctly.
Check brake supply voltage (typically 24 V DC). Measure brake coil resistance. Inspect brake wiring and connector. If the brake is mechanically seized, the motor requires workshop inspection.

Frequently Asked Questions

Which Siemens drive systems are compatible with the 1FK7060-5AF71-1UH3?

This motor is designed for use with Siemens SINAMICS S120 and SINAMICS S110 drive systems. The incremental encoder feedback interface and motor data set are fully supported within these drive families.

What type of encoder does the 1FK7060-5AF71-1UH3 use?

The motor is fitted with an incremental TTL encoder as indicated by the order code suffix. This provides speed and position feedback to the connected SINAMICS drive for closed-loop control.

Does this motor include a holding brake?

Yes, the 1FK7060-5AF71-1UH3 includes an integrated holding brake as indicated by the order code. The brake is typically rated for 24 V DC supply and is used to hold the axis in position when the drive is de-energized.

What is the IP protection rating of the 1FK7060-5AF71-1UH3?

The motor body is rated IP65, providing protection against dust ingress and low-pressure water jets. The shaft end is typically rated IP64 due to the rotating seal.

Can the 1FK7060-5AF71-1UH3 be used in vertical axis applications?

Yes, the integrated holding brake makes this motor suitable for vertical axis applications where the load must be held safely when the drive is switched off. Ensure the brake torque rating is verified against the static load before installation.

Troubleshooting

Motor vibrates excessively or runs roughly at low speeds

Check encoder signal quality using an oscilloscope at the drive encoder input terminals. Inspect encoder cable for damage, excessive length, or missing shielding. Verify drive speed controller gain parameters.

Replace damaged encoder cable with a shielded cable of the correct specification. Re-tune the speed controller proportional and integral gains in the SINAMICS drive commissioning tool. If encoder signals are distorted, the motor encoder may require replacement.

Motor overtemperature fault (F07900) triggers during normal operation

Measure ambient temperature at the motor installation location. Review the duty cycle and compare against the motor's S1 or S3 rating. Check that the motor surface is free from contamination that could impede heat dissipation.

Reduce the duty cycle or peak torque demand. Clean the motor housing to restore convective cooling. If the application genuinely requires higher continuous torque, consider upsizing to a higher frame motor or adding forced cooling.

Holding brake does not release when drive is enabled

Measure the DC voltage at the brake connector on the motor with the drive enabled. The nominal supply should be 24 V DC. Check the brake control output on the SINAMICS drive and the associated wiring.

Restore correct 24 V DC supply to the brake connector. Check and correct any wiring faults or blown fuses in the brake supply circuit. If voltage is correct but brake does not release, measure brake coil resistance; an open circuit indicates a failed brake coil requiring motor workshop repair.

Encoder fault (F03505) appears intermittently during operation

Inspect the encoder cable along its full length for chafing, tight bending radii, or pinch points caused by machine movement. Check connector locking mechanisms at both the motor and drive ends. Measure cable shield continuity.

Re-route the encoder cable to eliminate mechanical stress points and ensure the bending radius exceeds the cable minimum specification. Replace the connector if pins are corroded or damaged. Use only Siemens-approved pre-assembled encoder cables to ensure correct shielding and signal integrity.

Motor winding insulation fault indicated by drive overcurrent (F30001) at startup

Disconnect the motor cable at the drive output terminals. Using a 500 V DC insulation tester, measure resistance between each motor phase terminal (U, V, W) and the protective earth (PE). Values below 1 MOhm indicate degraded insulation.

If insulation resistance is low, the motor requires rewinding or replacement. Also inspect the motor power cable for insulation damage before reconnecting. Do not operate the motor with degraded winding insulation as this can cause permanent damage to the drive output stage.

Condition	Repair, Used, Refurbished, New in box (sealed)